Canister



FIG. 1 is a perspective view of a canister showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side view thereof, the remaining sides being identical;

FIG. 4 is a front elevation view thereof; and,

FIG. 5 is a bottom plan view thereof, the broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a canister, as shown. 